<template>
  <div>
    <div class="search">
      <input type="text" v-model="keyword" class="search-input" placeholder="输入城市名或拼音">
    </div>
    <div class="search-content" ref="search" v-show="keyword">
      <ul>
        <li class="search-item border-bottom" v-for="item of list" :key="item.id" @click="handleCityClick(item.name)">{{item.name}}</li>
        <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配内容</li>
      </ul>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      keyword: '',
      list: [],
      timer: null
    }
  },
  computed: {
    hasNoData () {
      return !this.list.length
    },
    ...mapState({
      currentCity: 'city'
    })
  },
  updated () {
    this.scroll.refresh()
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.search)
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  }
}
</script>

<style lang="stylus" scoped>
    @import '~styles/varibles.styl'
    .search
        height: .72rem
        background: $bgColor
        padding: 0 .1rem
        .search-input
            box-sizing: border-box
            width: 100%
            height: 0.62rem
            padding: 0 .1rem
            line-height: 0.62rem
            text-align: center
            border-radius: .06rem
            color: #666
            font-size: .24rem
      .search-content
        position: absolute
        top: 1.58rem
        left: 0
        right: 0
        bottom: 0
        z-index:1
        overflow: hidden
        background: #eee
        .search-item
          line-height: .46rem
          padding-left: .2rem
          background: #fff
</style>
